Straightening press and method of using same



July 10, 1923- I J. H. STALEY STRA-IGHTENIN'G PRESS AND METHOD OF USINGAME Filed March 1, i921 7 l G 2o 4 16 i I!" 25 A ,fl i I! z m9 20 P. I. 2/ ,8 -22 I Irv/6 12702",

azz? Patented July 10, 1923.

JOSEPH H. s'rALnY, or COLUMBUS, INDIANA. I

STRAIGHTENING PRESS AND METHOD OF USING SAME J Applicationfiled March 1, 1921. Seria1 No.-448,879.

T all whom it mayiconcern:

Be it known that I, JOSEPH H. STALEY, a citizen of the United States Columbus, in the" county ofl3artholon'1ew and State of Indiana, have invented new and useful Improvements in Straightening Presses and Methods-of UsingSame, of which the. followingis a specification.

This invention relatesto the method and means for taking the bends and crooks out of propellerfshafts, crankv shafts, and shafting in general which must be straightto afford the greatest element of. efficiency inits rotatable use; and the object of the invention is to provide adjustable centers on and between which the .shaft to be straightened may first; be rotated and its faultilooated and measured, andto provide'a press.

adjacent thereto to which the shaft maybe conveniently, and quickly transferred from said centers and the required pressure brought to bear where needed, to remove the faults and straighten the shaft;and the object is to provide means for, determining when the shaft-centers .are nottruefi A further object is to provide such a combined machine in which the fault locating and measuring member will not be inthe way of the work or-workman in operating the straightening portion of the machine, while being sufliciently convenient for repeated testingsas the work of'straightening the shaft progresses.

I accomplish the above and other objects which will hereinafter appear, by the mechanism illustrated in the accompanying drawing, in which:'

Fig. 1, 1s a front perspective view of .my invention with an engine crank shaft; 1n

position between centers for locating and measuring faults therein; This figure shows a in dotted lines the manner of testing a shaft that cannot be centered. Fig. 2 is a perspective view in side elevation of the device of Fig. 1. but with the crank shaft transferred from the fault locating and me'asurlng part to the straightening press.

Like characters of reference indicate like parts in the several views of the drawing.

The base 3, standard 4: and forwardly overhanging head 5 are in onepiece cast iron or steel, heavy and strong enough to withstand the strain that they will be subj ected to without breaking, and cast integral; with the front end of the base is a cross mem-If her 6 having a longitudinal groove 7 extendresiding at ing from end toend thereof. Perforated ears 8, cast integral with the base and. 6X"

tension aflord meansfor-bolting the -ma-.

chine toa bench or other suitable support. A pair ofbearing blocks 9, 9, with broad the cross member 6, have underside flanges 10 thatmake a close rubbing fit in groove 7, to keep the bloc-ks from rotating while allowbases to. insure ample bearing surface uponing them to be moved toward or away from each other upon said cross member. These have top recesses 11 as seats for shafting to be supported on'said=blocks.-

The head 5 has a vertical, screwthreaded. hole through which a correspondingly screwthreaded shaft' l2 isv screwed. A hand ,wheel 13, is mounted: in afixed manner on the upper end: of the screwshaft 12, above the head 5, forquick manipulation in adjusting the screw .up -or down,- and passing, through a hole through anenlarged diameter, 7 of the shaft between the wheel 13 and the,

head 5, is a longitudinally adjustable shaftlever 14: by which the screw -shaft is usually rotated in the shaft-straightening.opera; The-lower end .of the screw shaft. carries a swivelled bGfil'iIlgzblOCk 15,'preftions.

erably bevelled. on its bottom "to nearly-a,

bearing. edge in order to concentrate the pressure applied through the block, and to keep the block15 from twisting aroundwith the screw shaft under the pressure of the;

latter I prefer to provide a pin 16, one end of which is seated in the block and the other end ina vertical channel, 17 in theadjacenti 5 face ofv the standard v4. 3 1

Fastened to the cross member dof the i 3 .base,; in front and to the-middle thereof,- here shown" as by means of bolts,,is a bracket 18 with, a: horizontal hole through. it in Q which a shaft 19' ismounted. A-pair of standards 20, 20,,adjustably mounted onathis, shaft, each have clamp-ends 21 with draw bolts 22 by which they maybeflsecured at;

any given position. Heads attheir upp loo ends have threaded holes that receive ,wset 7 screws 23. The .endsof thescrews, project-- ing toward the middle of the. machine, areconical to act as center pins, and cross barsthrough the outer ends afford means for rotating the screws. The standards are set the proper distance apart, depending upon the length of, the shaft to be held by them, and the shaft to be held is then centered on the conical ends of screws 23.

For shafts that are too long, or that have not been provided with proper center ;holesor in which the center holes'have become battered and untrue, I provide standard extensions 25 which are suitably.notchedsat,

their upper ends to provide seats to receive and hold the shaft,' as one is shown Joy-the dotted lines in Fig. 1. In either case, the shaft to be tested is rotatedi by handand the bend in it is measured by means of a gauge 26. This gau'ge is supported'by a telescopically adjustable standard 27, the members of which are'held by a set screw 28 at any desired' heighth' above a clamp 29 supported on the shaft1'9. By loosening the clamp the gauge may be swung'down out'of" the way to the position shown in dot-ted lines-in Fig. 1, and held up in operative position shown 'by'the full lines by tightening itsset'screw'3O.

Inthe operation of'my'machine the shaft to be straightened is first tested' and its errormeasured by the gauge,- with the shaft either between the centers on screws 23 or'seated in the" notches of extensions 25. shaft is removedand is placedin the-recessed"seatsofthe 'blocks- 9, 9, either before or after which, the blocks aremovedto the respective" limits of the error in the shaft'to be corrected; With the highpoint the limits ofthe error in the-shaft are located, which enables theblocks of'thestraightening press to be properlyplaced and the progressof the correction easily tested. But one of the most important features of my invention is the means for determining Whether or not the centers of'a shaft having centers are faulty For error in the centerholesv of the shaft to be straightened-will mislead the workman who relies on tests made with the shaft rotating about center'pins 23; If the gauge indicates the same error'when' the shaft is rotated'on pins 23% when'rotated inzthe' notches of extensions 25 it may be safely assumed that thecenterholes'in'the shaftare correct;'otherwise thattheyare not and the tests must he-made by aidtofrthe notched extensions.

and rotated said gauge being adjustable to Then the 1 Havingthus fully described. my' inv ention, whatl claim as new and 'Fwish to secure by Letters Patent of the United States, is:

.l .1. In ashaft straightening machine, means to test a shaft having center holes comprising a gauge, apai-rlofcenter-pins on which the shaft is mounted and rotated, and means 55 totest the accuracy of the center holes in the shaft comprising additional supports with recesses in whichthe shaft is placed:

the'two positions of'the shaft. p 2. The combination with a shaft-straightening press,of means to test a: shaft having center holes, comprising arockable shaft, a pair of center pins rockable with said shaft on which pinsthe *shaftto Joe-tested is rotated, additional ihighershaft supports also rockable with 'the--center* supports, and:v a

gauge mounted on i the: :rockable shaft and L adj ustable" in its distancefrom thewlatterito reach the shaft undergoing-test when: held 1 bythe-center pins or: onnthe higher supports.

3; T he: combination with a shaft-straight ening press, .of means-totesta shaft having: center holes, comprisingamockingshaft; a bracket, a pair -of stand=ards adjustably S81 cured-to the rocking shaft each: havinga-nz adj ustable center 'screw to support the! shaft to be tested, and each: standard havingua/ notched extension in which: the shaft iunder 90 test is. furtheritested, a gauge,andwa telescop ing support adj ustabliy connecting the gauge with the rocking shaftiwherebyv-the. gauge may be moved to the Y different positions of the:shaft'under test.

4:. The herein-described method for test ing theaccuracy of center holes ina=cylindrical member, :comprising 1 the f positioning of said: member between peripheral. sup ports, gauging the same, positioningsaid member between supports entering said center' holes and again gauging said member, substantially as setufortha i 1 5. The herein described methodiof test ing the position-10f a-c center hole in" acyliridrical member, which" consists in supporting. said member peripherally,'gaugingthe mem berwhile rotating it peripherally, supports ing said I member from 'itsicenter I holeh and again gauging th'e memberiwhile rotating; it from its center hole support, substane tially;as SetfOrth;- a

Signed; at "Columbus; 1 Indiana, this the:

21 day of Feby, 1921;.

JosEBH 1i. (sinner. 

